Texas Instruments TI-83Plus Programmable Graphing Calculator, 10-Digit LCDIdeal for the algebra classroom. Lets students graph and compare functions, as well as perform data plotting and analysis. Horizontal and vertical split screen options. Advanced functions accessed through pull-down display menus. Includes tools for finance. I/O port for communication with other TI products. Power Source(s): 4 AAA Batteries with Lithium Battery Backup; Display Notation: Graphic; Number of Display Digits: 10; Display Characters x Display Lines: 16 x 8.